El Olmo is a typical porteño pizzeria, restaurant, and coffee shop located in the heart of Palermo. It's close to the subway and bus lines, so it's a great meeting point to start the night.
Classic BA Meeting Place
If you've been in BA for more than 3 days and haven't tried the pizza, head to Pizzeria Olmo. Their pies are authentic, uniquely Porteño. Ask for the special sauce that makes them even tastier. I have no idea what's in it, and I don't think they do either. After you've been there for 20 minutes, look around at the other tables and see if you can figure out what's going on, hehe! (It's a surprise, but you'll figure it out!)